O18 WFST, Lenghu
Graphs
Yearly Breakdown of MPEC Types
Term definition:
Editorial - Editorial MPECs associated with this station.
Discovery - MPECs associated with discovery made by this station.
OrbitUpdate - MPECs associated with orbit updates involving observations made by this station. Typically, these are recoveries of single-opposition objects.
DOU - Daily Orbit Update MPECs involving observations made by this station.
ListUpdate - MPECs associated with list updates involving observations made by this station. This category has largely been retired since 2012.
Retraction - Retracted MPECs involving observations made by this station.
Followup - MPECs associated with follow-up observations made by this station to an object discovered elsewhere.
FirstFollowup - MPECs associated with follow-up observations made by this station to an object discovered elsewhere, with this station being the first station to follow-up.
Other - MPECs that do not fit into categories listed above and involve observations made by this station.
Yearly Breakdown of Discovery Object Types
Yearly Breakdown of Orbit Update Object Types
Breakdown by Observers
Breakdown by Measurers
Breakdown by Facilities
Breakdown by Objects
Annual Breakdown
Weekly Breakdown
Hourly Breakdown
Tables
Yearly Breakdown of MPEC Types
Year | Total MPECs | Editorial | Discovery | P/R/FU | DOU | List Update | Retraction | Other | Follow-Up | First Follow-Up |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 41 | 0 | 4 | 4 | 31 | 0 | 0 | 0 | 2 | 0 |
| 2024 | 85 | 0 | 12 | 14 | 54 | 0 | 0 | 0 | 4 | 1 |
| 2023 | 31 | 0 | 4 | 8 | 15 | 0 | 0 | 0 | 3 | 1 |
| 2022 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2021 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2020 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2019 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2018 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2017 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2016 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2015 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2014 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2013 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2012 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2011 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2010 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2009 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2008 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2007 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2006 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2005 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2004 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2003 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2002 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2001 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1999 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1998 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1997 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1996 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1995 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1994 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1993 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
List of Individual MPECs
Index | Name | Date/Time | Discoverer | First-responding Confirmer | Object Type | Search Archival Image |
|---|
Index | Name | Date/Time | Discoverer | First-responding Confirmer | Object Type | Search Archival Image |
|---|---|---|---|---|---|---|
| 1 | MPEC 2025-F259 DAILY ORBIT UPDATE (2025 March 31) | 2025-03-31 12:31:00 | ✓ | |||
| 2 | MPEC 2025-F146 DAILY ORBIT UPDATE (2025 March 25) | 2025-03-25 12:15:00 | ||||
| 3 | MPEC 2025-F123 2025 FU5 | 2025-03-24 18:29:00 | ✓ | NEA (H>22) | CATCH | |
| 4 | MPEC 2025-F113 2025 DL50 | 2025-03-24 15:59:00 | ✓ | Unusual | CATCH | |
| 5 | MPEC 2025-F07 DAILY ORBIT UPDATE (2025 March 18) | 2025-03-18 12:04:00 | ||||
| 6 | MPEC 2025-F03 DAILY ORBIT UPDATE (2025 March 16) | 2025-03-16 12:02:00 | ||||
| 7 | MPEC 2025-E162 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS | 2025-03-12 20:26:00 | Comet | CATCH | ||
| 8 | MPEC 2025-E136 DAILY ORBIT UPDATE (2025 March 8) | 2025-03-08 12:11:00 | ||||
| 9 | MPEC 2025-E127 DAILY ORBIT UPDATE (2025 March 7) | 2025-03-07 12:06:00 | ||||
| 10 | MPEC 2025-E119 OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS | 2025-03-06 19:54:00 | Comet | CATCH |
List of Observers
Observers | Count |
|---|---|
| L. L. Fan, X. Kong, J. Q. Lu, Z. Lou, J. A. Jiang | 263 |
| Z. B. Su, S. F. Zhu, X. C. Li, S. X. Li, J. A. Jiang | 3 |
| Z. Q. Li, S. X. Li, R. D. Liang, X. Z. Li | 6 |
| Q. Y. Hai, X. C. Li, R. D. Liang, X. Z. Li, Z. Q. Li, S. X. Li | 9 |
| Z. Q. Li, X. Z. Li, R. D. Liang, Z. Y. Liu, S. X. Li | 6 |
| Z. Q. Li, X. Z. Li, R. D. Liang, Z. Y. Liu, S. X. Li, X. C. Li | 24 |
| Z. Y. Liu, S. X. Li, Z. Q. Li, Q. Y. Hai, K. Yan, J. Z. Zhu, N. Jiang, Z. Y. Cai | 15 |
| Z. Y. Liu, S. X. Li, Z. Q. Li | 3 |
| Q. Y. Hai, K. Yan, J. Z. Zhu, N. Jiang, Z. Y. Cai, Z. Q. Li, Z. Y. Liu | 12 |
| Q. Y. Hai, K. Yan, J. Z. Zhu, N. Jiang, Z. Y. Cai | 3 |
List of Measurers
Measurers | Count |
|---|---|
| B. X. Fu, S. H. Wang, J. Q. Lu, M. X. Cai, Z. L. Xu | 263 |
| B. Li, H. B. Zhao, Z. J. Xu, G. T. Zhaori | 207 |
| B. Li, H. B. Zhao, Z. J. Xu, G. T. Zhaori, B. X. Fu, S. H. Wang, J. Q. Lu, M. X. Cai, Z. L. Xu | 24 |
List of Facilities
Facilities | Count |
|---|---|
| 2.5-m f/2.48 reflector + CCD | 234 |